US1884273A - Disk pulverizer - Google Patents

Description

noch 25, 1932. E c, SANDEEN 1,884,273

DISK PULVERIZEH Filed April 2, 1930 2 Sheets-Sheet 1 Oct. 25, 1932. C, SANDEEN 1,884,273

DISK PULIVERIZER Fiied April 2. 1930 2 sheets-snee; `2

Patented Oct. 25, 1932 ERNEST c. seminari, or sr.rAUL, MINNESOTA- nrsx PULVERIZER e Application filed April 2,.193.` Serial No; 440,955.

This inventionrelates to a pulverizer or harrow and particularly to a pulverirzer of the disk type. It is desirable insuch a machine to have the same constructed so that the ground will be thoroughly worked over` and pulverized by the disks, to have the disks mounted so that they will operate efliciently and so that they can be easily'l removed if repairs or change are necessary.V It is also desirable'to have the machine simple in construction and arranged so that the disks can be adjusted as to height.

It is an object of this invention therefore Y to provide a disk pulverizer having forward f and rear rows of disks disposedsubstantially in the same horizontal plane, said disks being concavo-convex in form, the disks in the front row inclining longitudinally in one direction and the disks in the rear row inclining longitudinally in the opposite direction and being oppositely disposed, the rear disks also preferably. beingl staggered vwith relation to the front disks.

It is a further object of the invention tol provide a disk pulverizer comprising a front row of concave-convex disks, the disks at one side of the center of the machine facing one way and the disks `at the other side of the center facing in the opposite direction, said disks being longitudinally inclined so that their rear sides extend away from the center, said machine also having a rear row of 'similar disks, the disks at each side of the center facing in opposite directions, each of said latter disks, however, being inclined oppositely to the corresponding front disk and facing in the opposite direction.

It is also an object of the invention to provide such a structure as set forth in the preceding paragraph, a small disk being used It is still another object of the invention to provide a simple and ei'cient structure for` revolubly mounting a disk onfeach of said brackets.

These and other objects and advantages of the vinvention will be fully set forth in the following description made in connection with the accompanying drawings, in which like reference characters refer to similar parts throughout the severa-l views, and in which Fig. 1 is a top plan view of the machine; Fig. 2 is a view in side elevation thereof; Fig. 3 is a vertical section taken on line 3 3 of Fig. 1 as indicated by the arrows;

Fig.4 is a horizontal section taken on line 4-4 of Fig. 3 as indicated by the arrows; I

Fig. 5 is a partial Vertical section taken substantially on line 5--5 of Fig. 4, and

Fig. 6 is a view similar to Fig. 4 showing a modification.

Referring to the drawings, a machine is` shown comprising the side supporting wheels 10. which are journaled the ends 11a of an axle 11', said axle having the portions 11?) adjacent its end bent substantiallyy at right angles so that portions 11a are in effect crankarms. rlhe wheels 10 are retained on the ends of portions 11a by any suitable cap members 12 secured to the ends of the axle and by collar members 13 also secured to or formed on members 11a at the inner sides of the wheels. A frame 14 is provided having end members 14a to which are secured the bars 15 in which axle 11 is journaled. Each member 14a has a rear portion extending substantially parallel to the wheels 10 and a forward portion sloping inwardly slightly toward the center of the machine. The mem'- bers 14a are connected byy spaced longitudinal members 14?) rigidly secured to members 14a at their ends. The members14b are disposed over and bolted lto a tongue member 16 disposed centrally of frame 14 and extending forward therefrom. Forwardly and rearwardly extending bars 140 'are secured at their ends `tomembers 14?) and extend` therebetween. Crankshaft 11 is also jour- Wheels `10 Vhave hubs 10a in to receive a rod 54 which extends through lall of the brackets, said rod 54 being secured to bar 21, the eyelet bolts 55 embracing rod 54 between the ends of the portions 53a and passing through the'vertical flange of bar 21, said bolt 55 having a nut thereon at the outer side of said flange. Bracket 53 is provided with a hub 53?) similar to the hub 220, said hub, however, receiving a bushing 56. While bushing 56 may be made of various materials, it preferably is made of wood. The bearing bracket 57 is similar to bracket except that it is of uniform diameter in the portion disposed in hub 535, said bearing bracket rotating in hub 53?) and bushing 56.

In operation the `machine will be drawn forwardly by a tractor or team and disks 26 will roll in their bearings in brackets 22, the disks moving in the earth at their lower portions as shown in Fig. 2. The depths to which the disks penetrate can be regulated n by moving lever 40. This lever rotates axle 11 and raises kthe frame 14 and the disks by rotating the axle about the portions 11a. The disks can be raised entirely out of the ground as when itis desired to transport the machine and theycan be let into the ground different distances. The spring 44 assists in the movement of lever 40. The tension of this spring can be adjusted somewhat by adjustment of bolt 46. The lever 40 is held in the various positions by pawl 41 engaging segment 43 and the frame 14 is thus held in various heights. As the machine moves forwardly the disks 26 in the front row will engage the earth and cut it up and since said disks areinclined forwardly and rearwardly, the dirt will be thrown outwardly from the center of the machine at both sides thereof.` This dirt that is thrown outwardly will be engaged by the rear disks 26 which move in a line passing substantially midway between thefront disks and the dirt will be again thrown inwardly. The small disk 51`will move over the path between the two central disks of the front row so that the ground between these disks will be cut up. The disks are held down yieldingly in the ground by the springs 34 and can'of course yield upwardly to pass over some obstruction, such as a stone.` Whenr the frame 14 is elevated to lift the disks 26 from the ground, rod 31 will drop until pin 36 engages washer 35 and the disks will then be suspended from rod 31 and pins 36. The disks will be kept clean by Scrapers 39 disposed at the inner sides thereof. Should it be desired to remove one of the disks, this could be done by removing several of the bolts 24 and bearing brackets 23. The portions 22a can be moved outwardly or downwardly suliiciently to disengage them from the brackets 226.

In the modification shown in Fig. 6 it would be necessary to withdraw the rod 54 from the bracket portion 53al in order to remove the bracket. The disks are held accurately in position and yet turn freelyin the hubs of thesufpporting brackets; It will be obvious that a disk can be easily and quickly` removed fromits bracket.

i From the abovefdescription it is .seen that n applicant has provided a simple and `efficient soil pulverizer or .diskharrow and one in' It will, of course, be understood that vari'-l c ouschanges may bemade inthe form, details,

proportions and arrangement of the parts without departing fromthescope of applicantsinvention, which, generally stated, consists in a device capable of `carrying out the objects above ,setA forth, in the novelv parts and ,combinations of parts disclosed and'delined in the appended claims.

What is claimed is,:- v f 1. Agfarm implement, comprising a frame,

a pair of crank axle members mounted thereon, wheels .carried by said axle members, manual adjusting means controlling said axle members to vary the height of said wheels with respect to said frame, a plurality of aligned discoid soil working members mounted forwardly of said axle and resiliently connected to said frame for vertical movement with respect thereto, a second aligned row of discoid soil working members similarly connected to said frame rearwardly of said axle and oppositely disposedv with respect to said forward row of aligned discoid soil working members.

.2; A disk pulverizer having in combination a frame, a front row of concavo-convex disks mounted in said frame, the disks at opposite sides of the center of said frame having their concave sides directed respectively outwardl a second rowV of disks in the rear of said rst mentioned disks, the disks at either side of the center of said frame in said rear row having their concave sides directed inwardly respectively, the disks in said front row inclining outwardly toward their rear edges and the disks in said rear row inclinmg inwardly toward their rear edges, and a smaller concavo-convex disk disposed between the two central disks of said rear row and in the rear of the two central disks of said front row.

3. A disk pulverizer having in combination a frame, a disk-.carrying bracket mounted in said frame, having a hub portion with a bore therethrough, a concavo-convex disk,

a bearing bracket secured to the convex side of said disk and having a projecting bearing portlon, a washer at the concave side of said disk, a headed and nutted bolt passing through said bracket and washer and having a portion angular in cross section fitting a vno recess ofV similar cross section in said bearing bracket, said bearing portion of said bracket being ournaled in the bore of said hub, and said hub having a reduced exterior threaded endportion and a cup-like cap screwed onto said end portion. A i Y v4; A disk pulverizer having in combination,- a frame, a. bar extending horizontally transversely of said frame, a bracket secured to said bar and svvingable about a horizontal axis extending close to said bar, said bracket extending from said bar and having `a hub portion at its outer end, a disk journaled in said hub portion, a bar disposed above said hub portion extending transverse- 1y of said frame, a rod secured to said hub portion and extending through said last mentioned bar and a compression spring between said hub portion and last mentioned bar, said hub portion ha-ving projecting apertured ears at its top portion, said rod having an eyelet disposed between said ears, and a pivot member extending through said ears and eyelet and pivotally connecting said rod and hub portion.

In testimony whereof I affix my signature.

ERNEST C. SANDEEN.

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